InChI=1S/C16H16O9S/c1-23-14-3-2-8(4-12(14)18)16-13(19)7-10-11(17)5-9(6-15(10)24-16)25-26(20,21)22/h2-6,13,16-19H,7H2,1H3,(H,20,21,22)/t13-,16-/m1/s1